CAS No.: | 7722-88-5 |
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Formula: | Na4o7p2 |
EINECS: | 231-767-1 |
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Name of index | GB25557-2010 | FCCV | E450(iii) |
Tetrasodium Pyrophosphate Na4P207, % | 96.5-100.5 | 95.0-100.5 | ≥95.0 |
P205, % | -- | -- | 52.5-54.0 |
Water Insoluble, ≤ w/% | 0.2 | 0.2 | 0.2 |
PH (1% aqueous solution) | 9.9-10.7 | -- | 9.8-10.8 |
Arsenic (As), ≤ mg/kg | 3.0 | 3.0 | 1.0 |
Heavy Metals (as Pb), ≤ mg/kg | 10 | -- | -- |
Fluoride (as F), ≤ mg/kg | 50 | 50 | 50 |
Loss on Ignition, ≤ w/% | 0.5 | 0.5 | 0.5 |
Orthophosphate | Pass Test | -- | -- |
Hg, ≤ mg/kg | -- | -- | 1.0 |
Cd, ≤ mg/kg | -- | -- | 1.0 |
Pb, ≤ mg/kg | -- | -- | 1.0 |